lint fixes

Fixes for ruff 0.12
* Tweak some annotations
* Add __hash__() implementations to api classes: These really should be
  hashable
* My use of "super().__hash__()" is not very optimized but avoids some
  repetition

Signed-off-by: Jussi Kukkonen <jkukkonen@google.com>

tuf/api/_payload.py

@@ -181,6 +181,17 @@ def __eq__(self, other: object) -> bool:
             and self.unrecognized_fields == other.unrecognized_fields
         )
 
+    def __hash__(self) -> int:
+        return hash(
+            (
+                self.type,
+                self.version,
+                self.spec_version,
+                self.expires,
+                self.unrecognized_fields,
+            )
+        )
+
     @abc.abstractmethod
     def to_dict(self) -> dict[str, Any]:
         """Serialize and return a dict representation of self."""
@@ -299,6 +310,9 @@ def __eq__(self, other: object) -> bool:
             and self.unrecognized_fields == other.unrecognized_fields
         )
 
+    def __hash__(self) -> int:
+        return hash((self.keyids, self.threshold, self.unrecognized_fields))
+
     @classmethod
     def from_dict(cls, role_dict: dict[str, Any]) -> Role:
         """Create ``Role`` object from its json/dict representation.
@@ -551,6 +565,17 @@ def __eq__(self, other: object) -> bool:
             and self.consistent_snapshot == other.consistent_snapshot
         )
 
+    def __hash__(self) -> int:
+        return hash(
+            (
+                super().__hash__(),
+                self.keys,
+                self.roles,
+                self.consistent_snapshot,
+                self.unrecognized_fields,
+            )
+        )
+
     @classmethod
     def from_dict(cls, signed_dict: dict[str, Any]) -> Root:
         """Create ``Root`` object from its json/dict representation.
@@ -826,6 +851,11 @@ def __eq__(self, other: object) -> bool:
             and self.unrecognized_fields == other.unrecognized_fields
         )
 
+    def __hash__(self) -> int:
+        return hash(
+            (self.version, self.length, self.hashes, self.unrecognized_fields)
+        )
+
     @classmethod
     def from_dict(cls, meta_dict: dict[str, Any]) -> MetaFile:
         """Create ``MetaFile`` object from its json/dict representation.
@@ -940,6 +970,9 @@ def __eq__(self, other: object) -> bool:
             super().__eq__(other) and self.snapshot_meta == other.snapshot_meta
         )
 
+    def __hash__(self) -> int:
+        return hash((super().__hash__(), self.snapshot_meta))
+
     @classmethod
     def from_dict(cls, signed_dict: dict[str, Any]) -> Timestamp:
         """Create ``Timestamp`` object from its json/dict representation.
@@ -1001,6 +1034,9 @@ def __eq__(self, other: object) -> bool:
 
         return super().__eq__(other) and self.meta == other.meta
 
+    def __hash__(self) -> int:
+        return hash((super().__hash__(), self.meta))
+
     @classmethod
     def from_dict(cls, signed_dict: dict[str, Any]) -> Snapshot:
         """Create ``Snapshot`` object from its json/dict representation.
@@ -1098,6 +1134,17 @@ def __eq__(self, other: object) -> bool:
             and self.path_hash_prefixes == other.path_hash_prefixes
         )
 
+    def __hash__(self) -> int:
+        return hash(
+            (
+                super().__hash__(),
+                self.name,
+                self.terminating,
+                self.path,
+                self.path_hash_prefixes,
+            )
+        )
+
     @classmethod
     def from_dict(cls, role_dict: dict[str, Any]) -> DelegatedRole:
         """Create ``DelegatedRole`` object from its json/dict representation.
@@ -1256,6 +1303,9 @@ def __eq__(self, other: object) -> bool:
             and self.name_prefix == other.name_prefix
         )
 
+    def __hash__(self) -> int:
+        return hash((super().__hash__(), self.bit_length, self.name_prefix))
+
     @classmethod
     def from_dict(cls, role_dict: dict[str, Any]) -> SuccinctRoles:
         """Create ``SuccinctRoles`` object from its json/dict representation.
@@ -1408,6 +1458,16 @@ def __eq__(self, other: object) -> bool:
 
         return all_attributes_check
 
+    def __hash__(self) -> int:
+        return hash(
+            (
+                self.keys,
+                self.roles,
+                self.succinct_roles,
+                self.unrecognized_fields,
+            )
+        )
+
     @classmethod
     def from_dict(cls, delegations_dict: dict[str, Any]) -> Delegations:
         """Create ``Delegations`` object from its json/dict representation.
@@ -1529,6 +1589,11 @@ def __eq__(self, other: object) -> bool:
             and self.unrecognized_fields == other.unrecognized_fields
         )
 
+    def __hash__(self) -> int:
+        return hash(
+            (self.length, self.hashes, self.path, self.unrecognized_fields)
+        )
+
     @classmethod
     def from_dict(cls, target_dict: dict[str, Any], path: str) -> TargetFile:
         """Create ``TargetFile`` object from its json/dict representation.
@@ -1672,6 +1737,9 @@ def __eq__(self, other: object) -> bool:
             and self.delegations == other.delegations
         )
 
+    def __hash__(self) -> int:
+        return hash((super().__hash__(), self.targets, self.delegations))
+
     @classmethod
     def from_dict(cls, signed_dict: dict[str, Any]) -> Targets:
         """Create ``Targets`` object from its json/dict representation.

tuf/api/metadata.py

@@ -147,12 +147,15 @@ def __eq__(self, other: object) -> bool:
             and self.unrecognized_fields == other.unrecognized_fields
         )
 
+    def __hash__(self) -> int:
+        return hash((self.signatures, self.signed, self.unrecognized_fields))
+
     @property
     def signed_bytes(self) -> bytes:
         """Default canonical json byte representation of ``self.signed``."""
 
         # Use local scope import to avoid circular import errors
-        from tuf.api.serialization.json import CanonicalJSONSerializer
+        from tuf.api.serialization.json import CanonicalJSONSerializer  # noqa: I001, PLC0415
 
         return CanonicalJSONSerializer().serialize(self.signed)
 
@@ -261,7 +264,7 @@ def from_bytes(
 
         if deserializer is None:
             # Use local scope import to avoid circular import errors
-            from tuf.api.serialization.json import JSONDeserializer
+            from tuf.api.serialization.json import JSONDeserializer  # noqa: I001, PLC0415
 
             deserializer = JSONDeserializer()
 
@@ -288,7 +291,7 @@ def to_bytes(self, serializer: MetadataSerializer | None = None) -> bytes:
 
         if serializer is None:
             # Use local scope import to avoid circular import errors
-            from tuf.api.serialization.json import JSONSerializer
+            from tuf.api.serialization.json import JSONSerializer  # noqa: I001, PLC0415
 
             serializer = JSONSerializer(compact=True)
 

tuf/api/serialization/json.py

@@ -8,9 +8,6 @@
 verification.
 """
 
-# We should not have shadowed stdlib json but that milk spilled already
-# ruff: noqa: A005
-
 from __future__ import annotations
 
 import json

verify_release

@@ -108,7 +108,7 @@ def verify_github_release(version: str, compare_dir: str) -> bool:
                 "GET", url, preload_content=False, timeout=HTTP_TIMEOUT
             )
             with open(os.path.join(github_dir, filename), "wb") as f:
-                for data in response.stream():
+                for data in response.stream():  #  noqa: FURB122
                     f.write(data)
 
         return cmp(